Edit & Annotate

Add Watermark to PDF Online

Stamp custom text watermarks, copyright notices, confidentiality markers (e.g. 'CONFIDENTIAL', 'DRAFT'), or stamps across all pages of your PDF document.

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How to Watermark PDF

Follow these 3 simple steps to process your files securely in your browser:

1

Upload your PDF

Choose the document you want to watermark.

2

Customize watermark

Enter watermark text, choose font size, opacity, rotation angle (e.g. 45°), and color.

3

Stamp and download

Preview the watermark on your document and download the stamped PDF.

100% Private & Client-Side Processing

All document processing runs locally on your device using WebAssembly. Your files are never uploaded to our servers or stored in any cloud database, ensuring complete confidentiality for your personal and business documents.

Why Use PDF Saver to Watermark PDF?

Custom Text & Formatting

Enter any text string, adjust color, transparency, and font size.

Angle & Position Controls

Rotate watermarks diagonally (45°) or place horizontally across headers and centers.

All-Page Stamping

Automatically applies the watermark across all pages in seconds.

Zero Server Processing

Watermarks are stamped onto PDF canvas layers locally on your device.

Frequently Asked Questions

Can I control how visible or transparent the watermark is?

Yes. You can adjust the opacity slider from faint background text to prominent opaque stamps.

Can a recipient remove the watermark easily?

The watermark is embedded directly into the document's content stream, making it a permanent part of the PDF.

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